//#define _CRT_SECURE_NO_WARNINGS 1
//#include<stdio.h>
//#define f(a,b,x) a*x+b
//
//int main()
//{
//	printf("%d,%d\n", f(1, 2, 3), f(f(1, 2, 3), 4, 2));
//	return 0;
//}